Auxiliary air-inlet for explosive-motors.



G.'A. STEWART.

AUXILIARY AIR INLET FOR EXPLOSIVE MOTORS.

APPLICATION TILED FEB. 2, 1912.

1,088,245, Patented Feb. 24, 1914,

ariSifewarl 0- Wa n wows 27 2 UNITED STATES OFFICE;

GEORGE A. STEWART, OF SAN ANDREAS, CALIFORNIA.

AUXILIARY AIR-INLET FOR EXPLOSIVE-MOTORS..

' Specification of Letters Patent.

To all whom it may concern: 7

Be it known that I, GEORGE A. STEWART,

a citizen of the United States, residing at San Andreas, in the county of Calaveras, State of California, have invented certain new and useful Improvements in Auxiliary Air-Inlets for Explosive-Motors; and I do declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it appertains to make andv use the same, reference being bad to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this application.

This invention relates to improvements explosive 'motors. and particularly an air inlet mechanism, the object of the invention being to produce an auxiliary air inlet adapted to be connected and operated by the fuel control lever of the motor whereby when said fuel control lever is operated to admit the fuel into the motor in small orvlarge quantities it will also operate the auxiliary, air mechanism to admit an auxiliary supply of air into the manifold between the car-f bureter and-the motor, proportionately to the amount of fuel being consumed and also proportionately to the speed at which the motor is runnin 4 A further ob ect of the invention is to produce a simple and inexpensive device and yet one which will be exceedingly effective for the purposes for ,which it is designed.

These objects I accomplish by means of such structure and relative arrangement of the parts-as will fully appear by a-perusal of the following specificatlon and claims.

In the drawings similar characters of refrence indicate corresponding parts inthe several views.

Figure 1 is an outline of the explosive motor showing my improved mechanism connected therewith. Fig. 2 is a top plan view of my complete mechanism. Fig. 3 is a sectional view taken on a line --X of Fig. 2.. Fig. 4 is a side elevation of t e complete mechanism.

Referring now more particularly to the characters of reference on the drawings the numeral 1 designates a motor vehicle, 2 the centrally into the cup 8 is a-recesse 'heldin position by motor therein, 3 the carbureter therein; ithe Patented Feb. Application filed February 2, 1912. semi No. 674,947.. a

intake pipes from the 'earbureter to the motor.

The numeral 5 designates the steering post of the vehicle and thenumeral 6 designates the rod for controlling the amountof carbureted air supply from thecarbureter to the motor. This rod 6 projects along the steering post '5 in the usual manner and is provided with the usual operating handle 6". The lower end of the rod 6 is connected in the usual manner with the throttle valve of the carburetor 3 as at 6". Itmight be well at this point, to state that the main function of my improved structure isto provide an auxiliary air intake va-lve,'-the operation of which is controlled by the-movement of such rod 6 andI will further point out at this time-that this valve is connectedwith the rod 6 at a point between the foot board and the steering wheel of the vehicle as shown in Fig. 1 in order that the adjustment mocha and proportionately with respect tothe carbureted alr'supplyfrom the carbureter.

In applying myiimproved mechanism to the motor, I first provide a strap] .loolted around the post 5 as shown in Fig. 2, which strap 7 also holds an air cup 8 having a pipe 9 leading from its-lower end and connecting with the pipes 4 at the point 10 between the carbureter 3 and the motor 2. De ending d lug 11, such recess being threaded to receive a screw 12. Slidablymounted over the top surface of the cup 8 is a disk 13 having a portion of its body cut away as at 14, such disk being the screw 12 and making an air tight contact with the top surface of the cup 8 by means of a sprin washer 15 disposed between the head of t e screw 12 and the said disk 13 the tension of which spring holds said disk 13 in contact with the top surface of the cup 8. Pivoted to the amember 13 as at 16 is an arm 17, which'arm is pivoted at its other end to the block 19 slidably mounted on a lever 20 which lever is pivotally mounted as at 20 on antarm 21 which in turn is rigidly secured to the rod 6.

The sliding block 19 is provided with an arm 22 which projects longitudinally along the lever 20 and has at its outer end a pin 23'adapted to engage recesses 24 one bar 25 on the. lever 20. Such arm 22 has a handle member 26 for use in disengaging said pin 23 from said recesses and sliding the block 19 toward or'away from-the rod 6 which is the fulcrum point for the arm 21. This operation lessens or increases the amount of rotation of the disk 13 across the air intake 30, thereby diminishing or increasing the relative size of theauxil ary air intake opening, While at the same time, the movement of the rod 6, which controls the fuel intake, remains the same. This last described structure is one of the adjustments for the air supply which may be used and a still further adjustment is permitted by the following structure, namely:-The lever 20 has a lug 27 on its underside adapted to engage teeth 28 on a quadrant 29 on the arm 21. This mechanism also permits the lever 20 to'be pulled along and engage at any point on said quadrant which adjusts the position of the disk 13 at difierent positions with re spect to the arm 21. As can readily be seen this provides a further adjustment for controlling the amount of auxiliary air roportionately relative to the amount of el intake from the carbureter since the entire movement of the auxiliary air is ultimately operated by means of the carbureter operating rod 6.

Cut in the top of the air cup 8 is a triangular'air port 30 having its smallest angle extending toward the cut out portion 14 of the disk 13. As the disk 13 moves around over the top surface of the cup 8 it gradually opens the cut portion 1 1 into communication with the port 30 which then permits the suction of the motor 2 to draw a quantity of air through said port 30 and into the motor, thus aiding in the combustion of the fuel in the motor and thus giving a great efliciency from a minimumamount of fuel. Thus it will be seen that with the turning of the fuel supply rod 6, the port 30 is gradually opened to the atmosphere by reason of the ,arm 21, lever20 and arm 17 moving in unison with said rod 6 and as said lever 6 is moved to admit a lesser or greater amount of fuel into the motor this port 30 will correspondingly open a greater or lesser distance to admit a greater or lesser amount of air into the cylinder with respect to the amount of fuel taken therein. Also the exact amount of air admitted can be controlled to a nicety'by means of the control levers 20 and 22. In this way a greater or lesser amount of air may be admitted at diiferent times into the motor and then the mechanism returned to normal running position again. Similarly theexact point at which the auxiliary air may be commenced'to be admitted into the motor can be determined by its lever control structure.

1 From the foregoing description it will be readily seen that I have produced such a device as substantially fulfils the objects of the invention as set forth herein.

1 While this specification sets forth in detail the present and preferred construction of the device, still in practice such' deviations from such detail may be'resorted to as do not form a departure from the spirit of the invention.

Having thus described my invent-ion what I claim as new and useful and desire to secure by Letters Patent is 1. A device of the character described comprising the combination with a motor vehicle having a steering post and throttle valve lever rod extending along said steering post, of an auxiliary air valve secured to said post,- a lever on said auxiliary air valve, such lever being operatively connected with said throttle lever rod on said steering post, such auxiliary air valve having a communication with the manifold of the motor of said vehicle between the throttle of said motor and the motor, as described.

2. A device of the character described comprising the combination with a motor vehicle having a throttle and throttle lever rod' extending along the steering post of said motor vehicle, of an independent pipe communicating with the manifold of the motor of said motor vehicle between the throttle of saidmotor and said motor, an auxiliary air valve connected with said last mentioned pipe, such valve comprising a member having an air inle ty'a member slidably mounted over said air inlet, an arm adjustably connected between said slidable member and said throttle lever, such slid'able member being provided with a recess adapted to be registered with said air inlet, as described.

3. A vdevice of the character described comprisin the combination with a motor vehicle, 0 an auxiliary air supply for the motor of said motor vehicle, the same comprising an air inlet valve, a pipe communicating from said valve to the manifold of said vehicle between the carbureter and the motor, an arm operatively connected with said valve, a rod projecting along the steering post of said vehicle,,another arm secured to said rod, said first named arm being adjustably mounted on said second named arm, as described.

4. A device of the character described comprising the combination with a motor vehicle, of an auxiliary air supply for the motor of said motor vehicle, the same com- I prising an an inlet valve, a pipe commum- 7 eating from said valveto the manifold of said vehicle between the carbureter and the motor, an arm operatively connected with said valve, a rod projecting along the steering postof said vehicle, an arm fixed to said rod, a lever adjustably disposed on said arm,

said first named arm, being adjustably 10 mounted on said lever, as described.

' In testimony whereof I afiix my signature in presence of two witnesses.

GEORGE A. STEWART.

Witnesses:

Jos'HUA' B. WEBSTER, FRANK H. CARTER. 

